She hated him — but still wanted him sexually — day and night.
From the back:
Julia wanted revenge, and Frank was the unknowing victim. She set about getting even by using the only weapon she had—her beautiful body. Julia used her body artfully, teasing every erotic instinct Frank had. But she went too far and found that she could not resist satisfying the urges she had aroused in him. When Frank found out who she was he fed her to his wolf pack —six leering brutes who drew for high card to see “who would cut the cake.”